Licenses and credits

Peroglot is built on our own lessons, sentences, recordings and pictures, and on one open dictionary that deserves credit here.

srLex: Serbian word forms

The tables of word forms shown in the app and on this site ("behind this word", the declension and conjugation tables) are derived from the srLex 1.3 inflectional lexicon of Serbian, published by CLARIN.SI:

Ljubešić, Nikola; Klubička, Filip; Agić, Željko; Jazbec, Ivo-Pavao. Inflectional lexicon srLex 1.3. Slovenian language resource repository CLARIN.SI, http://hdl.handle.net/11356/1233.

srLex is licensed under Creative Commons Attribution-ShareAlike 4.0. We use it to look up the forms of every Serbian word the course teaches; the app never guesses a form. The morphological data we publish (a word's forms and their grammatical labels) is a derived work of srLex and is made available under the same licence, CC BY-SA 4.0. If you want that data in bulk, write to support@peroglot.com.

Corrections we make to srLex entries are kept as a separate patch layer and are included under the same licence.

What is not covered by that licence

Everything else is ours and is not open: the lesson texts and explanations, the example sentences and their translations, the exercises and acceptance rules, the audio recordings, the illustrations, the Pero character, the app and website software, and the course structure. They may be used only as the terms of service allow.

Speech and voices

Course audio is generated in advance with Microsoft Azure text-to-speech voices under a commercial licence. Speech recognition in the app uses the service built into your phone.

Software

The app and the website are built with open-source software, above all React Native, Expo and Next.js. Their licences are listed inside the app under Settings → About.